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Sodium-ion batteries have been touted as a sustainable alternative to lithium-ion batteries because they are powered by a more abundant natural resource. However, sodium-ion batteries have hit a signi...
More sensitive X-ray imaging（图）
X射线成像 光材料 闪烁体
2023/6/7
Scintillators are materials that emit light when bombarded with high-energy particles or X-rays. In medical or dental X-ray systems, they convert incoming X-ray radiation into visible light that can t...
A new X-ray technique developed at Cornell offers an unprecedented look at the elaborate inner workings of batteries while they are in use – a breakthrough that is already yielding important findings ...
In food products, the natural blues tend to be moody.
雷.尤里（RAY EWRY）图
尤里 RAY EWRY 田径 美国 1904年美国圣路易斯夏季奥运会 1908年英国伦敦夏季奥运会
2009/9/8
雷•尤里在1900年、1904年和1908年奥运会上夺得八面金牌，但他仍不为现在的人们所了解，这主要是因为他当时参加的比赛项目在今日的奥运会上都不再流行：立定跳高、立定跳远和立定三级跳。1900年法国巴黎夏季奥运会上，他一个人包揽了三项立定跳金牌，并在1904年的美国圣路易斯奥运会上成功卫冕，1908年奥运会上，立定三级跳从奥运比赛项目中去掉，但他仍然夺取了另外两项立定跳的金牌。在这届...
Ray Ewry won eight Olympic gold medals in 1900, 1904 and 1908, yet he is almost unknown today because his unprecedented feats were performed in events that are no longer held: the standing high jump, ...
Ray Fred Smith（图）
Ray Fred Smith
2009/5/12
RAY F. SMITH, EMERITUS professor of entomology at the University of California at Berkeley, died August 23, 1999, at his home in Lafayette, California. He was 80 years old. Ray was born on January 20,...
May 2, 2007，The May 2 issue of the journal Nature reveals how collaboration between scientists in the United States and the United Kingdom has led to a major breakthrough in the understanding of antif...
01 May 2007，Manta rays are hard to miss —big, black and stretching up to seven metres wide, but scientists are still in the dark about the world’s largest ray.
Iowa State astrophysicists provide the eyes for new gamma ray telescope system（图）
gamma ray telescope system
2007/4/20
19-Apr-2007，AMES, Iowa -- There’s a "First Light Fiesta" in the works at Mt. Hopkins near Amado, Ariz. And Iowa State University astrophysicists will be among those enjoying the celebration of a new t...
10 April 2007,Blue spotted stingray in Moreton Bay. Photo: Susan Theiss UQ researchers have shown that stingrays, once thought to be colour-blind, may be capable of seeing in colour.They have shown th...
8 March 2007—Several times a week, astronomers detect the violent death cry of a massive star -- an extraordinarily energetic release of gamma rays that takes place in just a matter of seconds to minu...
European astronomers create largest-ever catalogue of gamma-ray sources in the universe（图）
gamma-ray
2007/3/15
23 February 2007，Using data from the European Space Agency's latest orbiting gamma-ray observatory, Integral, a European team of astronomers led by Dr Antony Bird of the University of Southampton (UK)...
8 March 2007，HESS is a system of four gamma-ray telescopes designed to probe extreme cosmic events and put constraints on the nature of "dark matter". In 2005, HESS detected eight new high-energy gamm...
X-Ray source which can simultaneously detect spectral and spatial variations could have huge benefits for medical research
X-Ray beam Optoelectronics
2007/2/12
05 February 2007，A pioneering technique which for the first time allows simultaneous detection of both the spectral and spatial variation of an X-ray beam has been developed by researchers at the Univ...